Math Challenge for 13-Year-OldsOnline version Test your math skills with this fun quiz designed for 13-year-olds! by Appolinaria [AO] 1 What is the value of 7 x 8 x (-1) x (-1)? a 54 b 48 c 56 d 64 2 What is the square root of 144? a 16 b 10 c 12 d 14 3 What is 15% of 200? a 35 b 30 c 25 d 40 4 What is the perimeter of a rectangle with length 5 and width 3? a 16 b 20 c 18 d 15 5 If x + 5 = 12, what is x? a 2 b 7 c 10 d 5 6 What is the value of 3^3? a 27 b 12 c 30 d 9 7 What is 100 divided by 4? a 40 b 20 c 30 d 25 8 What is the area of a triangle with base 4 and height 3? a 6 b 12 c 8 d 10 9 What is the next prime number after 7? a 9 b 10 c 11 d 12 10 What is -56*2+113-(-2)? a -1 b -2 c 4 d 3